Visualization of Carbon Footprint Across the Entire Lifecycle of Hospital Buildings Based on Building Information Modeling and Life Cycle Assessment

Abstract

This study systematically investigates the application of integrated Building Information Modeling (BIM) and Life Cycle Assessment (LCA) technology for visualizing the carbon footprint throughout the entire lifecycle of hospital buildings. The research begins by analyzing the distinctive characteristics of hospital buildings as major energy consumers and carbon emitters, as well as the limitations of traditional carbon accounting methods, demonstrating the advantages of BIM-LCA integration in data aggregation, efficient accounting, and visual representation. It then delves into the implementation pathways, key technologies, and specific application scenarios for carbon footprint visualization across the four main stages of a hospital's lifecycle. In the design stage, parametric simulation and multi-scenario comparison enable proactive prediction and optimization of the carbon footprint. During the construction stage, dynamic management of construction process emissions is achieved through 4D carbon simulation and material management. For the operation and maintenance stage, a Building Information Modeling-Life Cycle Assessment- Internet of Thing (BIM-LCA-IoT) digital twin system is constructed to enable real-time monitoring and precise control of energy consumption and carbon emissions. In the demolition stage, a feasible technical pathway is proposed by leveraging the model for waste quantification and recycling scenario evaluation, supporting green demolition decisions. Finally, the paper summarizes current challenges, such as data standards and platform interoperability, and outlines future directions for the deep integration of technology and applications. This research provides a systematic technical framework and practical reference for achieving visible, manageable, and controllable carbon footprint management throughout the entire lifecycle of hospital buildings.